一台穆斯堡尔谱仪驱动电路的设计

穆斯堡尔谱仪驱动电路的功能,是产生一个驱动电压来推动振动子,使之按要求的速度波形运动。穆斯堡尔谱仪的机电振动装置采用扬声器系统。它具有线性的电能-机械能转换特性。根据振动子的质量,弹性系数及线圈的阻抗,可以精确计算出驱动电压的波形和大小。通常并不需要专门装配驱动电压发生器,而是用一个参考波形发生器和一个负反馈放大电路来实现。当负反馈放大倍数足够大时,反馈系统自己就可以产生所要求的驱动电压。

The design of a drive circuit of the Mossbauer spectrometer

A drive circuit of the Mossbauer spectrometer has been designed. It can be matched with either a binary multichannel pulse analyser(such as 512, 1024-channel), or a decimal multichannel puulse analyser Csuch as 400, 800-channel). Using all-digital circuit, the reference waveform generator may freely select different velocity sweep waveform of triangle, sinusoidal and so on. An automatic position fixing circuit is built in the drive circuit so that the equilibrium position of the transducer is kept right in the middle of the electromechanical part.